hi gurus,
I'm executing some commands and I want to append both the command and output to a text file. Example:
Is there any way where I can append both the command and output of the command to a text file?
I have a command stream that will parse down an ftp DIR listing of a remote directory and return the name of the newest file that I am interested in. The command is
sed -e '/^d/d' sppay.listing |sed -n -e '/SPPAY/p'|sort -r -k 43M,45 -k 47,48 -k 50,54|sed -n -e '1p'|cut -c 56-99
and what it... (2 Replies)
Greetings all,
I'm in need of some help in coming up with this command which requires me to append 5 strings together:
1. echo "Status from system:"
2. `cat logs.txt` (i need the output of this command)
3. echo "Error output: "
4. `cat errors.txt`(i need the output of this command)
5.... (3 Replies)
i have something like below in my SAS code and every month i need to append a text say 'ext.hlc_sum0906' near ext.hlc_sum0905 and next month after ext.hlc_sum0906 i need to append this 'ext.hlc_sum0907' and so on like that.. is it possible using SED or some other command in unix?
%let... (1 Reply)
Hello all.
I was wondering if it possible to write a bash script that would do the following:
I perform molecular modelling calculations and the output files are all text files with various different extensions.
For example, I submit the input file "job_name.inp" and when it is done or the... (18 Replies)
Say I have a text file like:
1
3
4
How would I use ksh to put the number '2' into the second line of that file? I'm using OpenBSD so the sed syntax might be a bit different (I have no idea how to use sed, though) (4 Replies)
Hi
Below command is returning the list of files which having this string "MTL_SYSTEM_ITEMS".
find . -name "*"|xargs grep -il MTL_SYSTEM_ITEMS
Ex: Above command is returing 2 files (Out of 10 files 2 files having this string). ./file1.txt and ./file2.txt
Here I want to append... (3 Replies)
Hi ,
I am writing a shell script to check pvsizes in linux box.
# for i in `cat vgs1`
> do
> echo "########### $i ###########"
> pvs|grep -i $i|awk '{print $2,$1,$5}'>pvs_$i
> pvs|grep -i $i|awk '{print $1}'|while read a
> do
> fdisk -l $a|head -2|tail -1|awk '{print $2,$3}'>pvs_$i1
>... (3 Replies)
i have to append a text file
grep for a word, if found, put comment in starting of the line.
here is an example
cat test.sh
bin/ksh
Hello World
Test Message
:wq!
search for "bin" word in test.sh file if found comment it out at starting of the line:
Output as follows:
#bin/ksh... (5 Replies)
Hi guys,
I have a text file named file1.txt that is formatted like this:
001 , ID , 20000
002 , Name , Brandon
003 , Phone_Number , 616-234-1999
004 , SSNumber , 234-23-234
005 , Model , Toyota
007 , Engine ,V8
008 , GPS , OFF
and I have file2.txt formatted like this:
... (2 Replies)
In the awk below I am trying to cp and paste each matching line in f2 to $3 in f1 if $2 of f1 is in the line in f2 somewhere. There will always be a match (usually more then 1) and my actual data is much larger (several hundreds of lines) in both f1 and f2. When the line in f2 is pasted to $3 in... (4 Replies)
Discussion started by: cmccabe
4 Replies
LEARN ABOUT DEBIAN
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)